# Milk capacity of silicone breast pumps How much milk does a silicone breast pump hold? Haakaa Generation 1 Silicone Breast Pump \(Gen\. 1\): The pump holds 4 oz / 100 ml of milk\. Haakaa Generation 3 Silicone Breast Pump: The Gen 3 pump comes in 160ml/6oz and 250ml/9oz capacities\. Haakaa Generation 2 Silicone Breast Pump with Suction Base & Silicone Cap \(Gen 2\): It is sold in two capacities: 100 ml \(4 oz\) and 150 ml \(5 oz\)\. Haakaa Gen 2 \(combo pack\): The food\-grade silicone feels substantial yet soft to the touch, and the 150 ml capacity markings are clear and easy to read\. ### 1. [Haakaa Generation 1 Silicone Breast Pump \(Gen\. 1\)](/products/ucp/haakaausa-com/8244368449) (sold by haakaausa\.com) The pump holds 4 oz / 100 ml of milk\. - Capacity: The pump holds 4 oz / 100 ml of milk\. (listing) - Material: The pump is made from soft 100% food\-grade silicone in a single piece, with no joints or separate parts\. (listing) ### 2. [Haakaa Generation 3 Silicone Breast Pump](/products/ucp/haakaausa-com/803136733237) (sold by haakaausa\.com) The Gen 3 pump comes in 160ml/6oz and 250ml/9oz capacities\. - Capacity: The Gen 3 pump comes in 160ml/6oz and 250ml/9oz capacities\. (listing) - Material: The store listing describes the pump as made from food\-grade silicone\. (listing) ### 3. [Haakaa Generation 2 Silicone Breast Pump with Suction Base & Silicone Cap \(Gen 2\)](/products/ucp/haakaausa-com/1436330459189) (sold by haakaausa\.com) It is sold in two capacities: 100 ml \(4 oz\) and 150 ml \(5 oz\)\. - Capacity: It is sold in two capacities: 100 ml \(4 oz\) and 150 ml \(5 oz\)\. (guide) - Material: The pump is made from 100% food\-grade silicone and is described as especially soft and comfortable\. (guide) ### 4. [Haakaa Gen 2](/products/ucp/haakaausa-com/8540950349) (sold by haakaausa\.com) The food\-grade silicone feels substantial yet soft to the touch, and the 150 ml capacity markings are clear and easy to read\. - Capacity: The food\-grade silicone feels substantial yet soft to the touch, and the 150 ml capacity markings are clear and easy to read\. (blog) - Material: The pump is made from soft 100% food\-grade silicone\. (listing) Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\. Written 2026-10-23T05:17:06.408Z. This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. The person approves the total; once RoboTrunk has checked the store's total against it, the person is given the checkout link to tap in their own browser, or, if the person prefers and gives permission, their agent may open the link and finish there, and payment always happens on the store's own checkout page. RoboTrunk never takes the payment or sees a card. Where the rest of this site is: - /agent/story.md is what RoboTrunk is and how it works, in full. - /agent/tools.json is every tool, its arguments and its answers. - /agent/merchants is every store you can buy from through RoboTrunk. - /products/ucp is every store's indexed products. - /products/search is one search across every store, in plain words. - [What RoboTrunk is](/agent/story.md) - [Every tool, in your browser through WebMCP](/agent) - [The tools and how to call them](/agent/tools.json) - [The stores you can buy from](/agent/merchants) - [Every store's products](/products/ucp) - [Search every store at once](/products/search)